Patent US4569532A successfully refreshed from Google Patents.
US4569532A
Expired / Lapsed
US
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Infant crawler
Assignee: Individual
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Filing: 1984-08-01
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Granted: 1986-02-11
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Expires: 2004-08-01
Abstract
Abstract An infant crawler used to assist infants in learning to walk, wherein the infant is supported by a central frame in a generally forwardly inclined position at a height whereat the infant's feet can reach the floor, so that the infant may move the crawler by pushing with its foot action. The torso of the infant is supported in a generally forwardly inclined position, so that the infant's strength and attention are not diverted from the process of learning leg and foot movement, to the necessity for supporting and coordinating the upper body. In a preferred embodiment, the central frame includes a forwardly and upwardly inclined torso support, and a rearwardly and upwardly inclined seat disposed behind the torso support. This central frame is in turn supported by four legs providing a wide base to avoid tipping, and having wheels on the ends so that the infant crawler may be pushed about by the infant. A belt is also preferably provided to fix the infant to the central frame.
Inventors
- 👤 Seyed A. Mirkarimi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:35
CPC Classifications
B; B62; B62B; B62B7/00; A; A47; A47D; A47D13/00; A47D13/04; A47D13/043
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
142 words
An infant crawler for assisting an infant in learning to walk, comprising: a central frame of a size suitable for carrying and supporting an infant thereupon, said central frame having a torso support means for supporting the torso of the infant, including a forwardly and upwardly inclined support surface, and a seat means rearwardly disposed from said torso support means, said inclined surface and said seat means cooperating to support the body of the infant in a generally forwardly inclined position; and means for rollably supporting said central frame on a flat surface at a sufficient height above the surface so that the feet of the infant may contact the flat surface, whereby the infant is positioned to utilize the feet in propelling the walker without the need to support the torso upright and without using its hands in a crawling motion.
Claim 2
Dependent Claim
142 words
An infant crawler for assisting an infant in learning to walk, comprising: a central frame of a size suitable for carrying and supporting an infant thereupon, said central frame having a torso support means for supporting the torso of the infant, including a forwardly and upwardly inclined support surface, and a seat means rearwardly disposed from said torso support means, said inclined surface and said seat means cooperating to support the body of the infant in a generally forwardly inclined position; and means for rollably supporting said central frame on a flat surface at a sufficient height above the surface so that the feet of the infant may contact the flat surface, whereby the infant is positioned to utilize the feet in propelling the walker without the need to support the torso upright and without using its hands in a crawling motion.
Claim 3
Dependent Claim
35 words
The infant crawler of claim 1, wherein the forwardly and upwardly inclined support surface of said torso support means is covered with a soft padding to cushion the contact with the torso of the infant.
Claim 4
Dependent Claim
23 words
The infant crawler of claim 1, wherein the connecting link is covered with a soft padding to cushion the contact with the infant.
Claim 5
Dependent Claim
23 words
The infant crawler of claim 1, wherein the seat means is covered with a soft padding to cushion the contact with the infant.
Claim 6
Dependent Claim
41 words
The infant crawler of claim 1, wherein the forwardly and upwardly inclined support surface of said torso support surface of said torso support means is upwardly inclined at an angle of from about 35 to about 45 degrees to the horizontal.
Claim 7
Dependent Claim
35 words
The infant crawler of claim 1, wherein said torso support means and said seat means are joined by a horizontally disposed connector link, whereby said seat means is rearwardly displaced from said torso support means.
Claim 8
Dependent Claim
43 words
The infant crawler of claim 1, wherein said means for rollably supporting includes four legs joined to said central frame, each of said legs having a roller at the distal end thereof so that said infant crawler may roll on the flat surface.
Claim 9
Dependent Claim
17 words
The infant crawler of claim 7, wherein said central frame and said legs are made of steel.
Claim 10
Dependent Claim
17 words
The infant crawler of claim 7, wherein said central frame and said legs are made of plastic.
Claim 11
Dependent Claim
18 words
The infant crawler of claim 7, wherein said central frame and said legs are made of aluminum alloy.
Claim 12
Dependent Claim
36 words
The infant crawler of claim 7, further including a line strung between at least two of said legs, whereby said line prevents the infant from being injured when said infant crawler is propelled against an obstruction.
Claim 13
Dependent Claim
57 words
The infant crawler of claim 1, wherein said means for rollably supporting includes four legs joined to said central frame, at least two of said legs being joined to said central frame by hinges, each of said legs having a roller at the distal end thereof so that said infant crawler may roll on the flat surface.
Claim 14
Dependent Claim
27 words
The infant crawler of claim 12, wherein four legs are hinged, and said hinges are lockable to vary the height of the infant crawler above the ground.
Claim 15
Dependent Claim
19 words
The infant crawler of claim 1, further including means to prevent the infant from falling off said infant crawler.
Claim 16
Dependent Claim
38 words
The infant crawler of claim 1, further including a belt attached to said central frame and of sufficient length to fasten about the body of the infant, whereby the infant is prevented from falling off said infant crawler.
Claim 17
Dependent Claim
35 words
The infant crawler of claim 1, wherein said means for rollably supporting includes bumper means for preventing the infant in the infant crawler from being injured when said infant crawler is propelled against an obstruction.
Claim 18
Dependent Claim
12 words
The infant crawler of claim 1, wherein entertainment devices are attached thereto.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-02-10 | 1989-08-12 | 1990-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-10 | 1993-08-12 | 1994-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-10 | 1997-08-12 | 1998-02-11 | $7700.00 | Window Closed / Lapsed |